Things To Do Memories To Be Made At Door County's Points Of Interest DOOR COUNTY PARKS: Newport State Park Peninsula State Park Potawatomi State Park Rock Island State Park Whitefish Dunes State Park DOOR COUNTY EVENTS (MARKETS, MUSIC, ART, SILENT SPORTS AND FUN): Door County Visitors Bureau Events & Festivals Door County Visitors Bureau Experience Iconic Door County Sturgeon Bay Visitor Center Experience Entire Peninsula